Conduit for underground electric wire cables



(No Model.) 5 Y J. MAGKINTOSH.

GONDUIT FOR UNDERGROUND ELEOTRIG WIRE GABLES. No. 264,722.

Patented Sept. 19, 1882.

. fnyenigz" UNITED STATES PATENT OFFICE.

JAMES MAOKINTOSH, OF PHILADELPHIA, PENNSYLVANIA.

CONDUIT FOR'UNDERGROUND ELECTRlC WIRE CABLES.

SPECIFICATION forming part of Letters Patent No. 264,722, dated September 19, 1882.

(No model.)

To all whom it may concern Be it known that l, JAMES D'IACKINTOSH, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia, State oflennsyl vania, have invented new and useful Improvements in Conduits for Underground Electric \Vire Gables, of which the following is a specification, reference being had to the accompanying drawings, in which Figure l is a plan view of the conduit having the cover removed and a portion of the false bottom broken away. Fig. is a side ele ration, partly in section.

My invention relates to underground conduits.

The object of my invention is to so construct a conduit that any dampness l'rom sweating or any water that may enter the conduit will follow grooves a, made in the bottom A, and enter the drain B, and be discharged through the drainagetube U, which may lead into the earth or a culvert, thereby preventing any accumulation of water in the conduit, the false bottom D being constructed so as to allow i'rre passage of the water between it and the sides of the conduit into the grooves made in the bottom A. The ventilation otthe eonduit is obtained by attaching a pipe to the col lai- F, which may be placed in the sides G or in the cover 1*], as the locality of the conduit may seem to require, or where electric streetlights are used as one of the means of ventilation. The conduit can be made of any material that will retain its shape, it being more particularly designed to hold square cables. A conduit. one foot square, inside measurement, will hold a block of cables ten by eleven containing between seventeen hundred and twentyfive hundred wires, and have an inch space all around for the purpose of handling the cables and for ventilation and drainage without the water coming in contact with the cables.

Iso construct the cover that it can be re moved and replaced at any part of the conduit for the purpose of connecting branch cables or relaying or repairing the same. Strips are pro vided on the inside of the cover E, which will hold the cover in place and enable it to be water-tight by placing strips of gum or a watcrproof cement on the edgeof sides G and pre sing it together.

Having fully described my invention, what I desire to claim and secure by Letters Patent is- The underground conduit for electric wires, having the interior of its bottom provided with the drain B, extending longitudinally in the direction of the conduit, and having side or lateral grooves extendingtherefrom and to the sides of the conduit, in combination with the false bottom 1), as described, whereby a tree passage is formed between it. and the conduit for the passage of the drain-water, as set forth.

Janus MAOKINTOslL Witnesses:

JAMEs H. Cox, OHAnLEs BAEeLEn. 

